* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    height: 100%;
    background: linear-gradient(120deg,rgb(6,129,140) 0%,rgb(16,70,115) 100%) no-repeat;
}

a {
    text-decoration: none;
    color: #eee;
    font-size: 0.8rem;
}

.box {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin: 1rem;
}

.box form {
    width: 100%;
    max-width: 400px;
    margin-top: 13%;
}

.box form h4 {
    color: #eee;
    font-weight: 100;
    font-size: 1.3rem;
    text-align: center;
    margin-bottom: 1.5rem;
}

.box form .acc input,
.box form .btn {
    outline: none;
    display: block;
    width: 100%;
    height: 2.5rem;
    line-height: 2.5rem;
    margin-bottom: 1.5rem;
    color: #eee;
    background-color: rgba(0,0,0,20%);
    border:none;
    border-radius: 2.5rem;
    text-indent: 1rem;
    transition: background-color .3s;
}

.box form .btn {
    text-align: center;
    border: 1px solid #eee;
    background-color: transparent;
}

.box form .acc input::placeholder {
    color: #bbb;
}

.box form .acc input:hover {
    background-color: rgba(0,0,0,30%);
}

.box form .acc input:focus {
    background-color: rgba(0,0,0,40%);
}

.fn label {
    font-size: 0.8rem;
}

.fn label input[type="checkbox"] {
    display: none;
}

.fn label input[type="checkbox"] + span {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    padding: 2.3px;
    border: 1px solid #eee;
    vertical-align: middle;
    border-radius: 50%;
    margin-right: 5px;
}

.fn label input[type="checkbox"] +span > span {
    float: left;
    width: 0.6rem;
    height: 0.6rem;
    background-color: #eee;
    border-radius: 50%;
    opacity: 0;
}

.fn label input[type="checkbox"]:checked +span {
    border-color: #eee;
}

.fn label:hover input[type="checkbox"] +span > span {
    opacity: .5;
}

.fn label input[type="checkbox"]:checked +span > span {
    opacity: 1;
}

.fn,.login {
    color: #eee;
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem !important;
}

.login a,.login input {
    overflow: hidden;
    height: 2.5rem;
    line-height: 2.5rem;
    border: 1px solid #eee;
    border-radius: 2.5rem;
    margin: 0.5rem 0;
    color: #eee;
    background-color: transparent;
    text-align: center;
}

.login a {
    width: 40%;
}

.login input {
    width: 60%;
}

.login span {
    margin: 0.5rem;
    font-size: 0.8rem;
    line-height: 2.5rem;
}

.fn {
    margin: 0 1rem;
}

.login {
    margin: 0 2rem;
}

.reg {
    font-size: 0.8rem;
    color: rgba(255,255,255,60%);
    text-align: center;
}

.ccc {
    transition: color .5s;
}

.ccc:hover {
    color: #ccc;
}

.fff {
    transition: color .3s,background-color .3s;
}

.fff:hover {
    color: #333 !important;
    background-color: rgba(255,255,255,80%) !important;
}












/* https://space.bilibili.com/108279272 */